TY  - BOOK
AU  - COLLINS Barry
TI  - The Great British switch-off
PY  - 2021///
KW  - PUBLIC SWITCHED TELEPHONE NETWORK
KW  - PSTN
KW  - MODERN DIGITAL TECHNOLOGY
N2  - About the UK telephone network that will come to an end in 2025.  But the migration to modern digital technology will affect many things
ER  -